The calibration and electron energy reconstruction of the BGO ECAL of the DAMPE detector
Zhiyong Zhang, Chi Wang, Jianing Dong, Yifeng Wei, Sicheng Wen,, Yunlong Zhang, Zhiying Li, Changqing Feng, Shanshan Gao, ZhongTao Shen,, Deliang Zhang, Junbin Zhang, Qi Wang, SiYuan Ma, Di Yang, Di Jiang, Dengyi, Chen, Yiming Hu, Guangshun Huang, Xiaolian Wang, Zizong Xu
TL;DR
This paper details the calibration process and energy reconstruction methods for the BGO ECAL of the DAMPE detector, crucial for accurate cosmic ray measurements in space-based dark matter research.
Contribution
It introduces a comprehensive calibration procedure and demonstrates effective electron energy reconstruction using beam test data for the BGO ECAL.
Findings
Successful calibration of the BGO ECAL using cosmic rays and beam particles.
Accurate electron energy reconstruction demonstrated in beam tests.
Enhanced understanding of detector performance for space-based dark matter experiments.
Abstract
The DArk Matter Particle Explorer (DAMPE) is a space experiment designed to search for dark matter indirectly by measuring the spectra of photons, electrons, and positrons up to 10 TeV. The BGO electromagnetic calorimeter (ECAL) is its main sub-detector for energy measurement. In this paper, the instrumentation and development of the BGO ECAL is briefly described. The calibration on the ground, including the pedestal, minimum ionizing particle (MIP) peak, dynode ratio, and attenuation length with the cosmic rays and beam particles is discussed in detail. Also, the energy reconstruction results of the electrons from the beam test are presented.
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